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89487853 = 7131973709
BaseRepresentation
bin1010101010101…
…11100111101101
320020101110020221
411111113213231
5140402102403
612514011341
72134430350
oct525274755
9206343227
1089487853
1146571604
1225b76b51
1315702ac0
14bc56297
157cc9dbd
hex55579ed

89487853 has 32 divisors (see below), whose sum is σ = 117689600. Its totient is φ = 66064896.

The previous prime is 89487787. The next prime is 89487857. The reversal of 89487853 is 35878498.

It is a cyclic number.

It is not a de Polignac number, because 89487853 - 213 = 89479661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89487853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89487857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125863 + ... + 126571.

It is an arithmetic number, because the mean of its divisors is an integer number (3677800).

Almost surely, 289487853 is an apocalyptic number.

It is an amenable number.

89487853 is a deficient number, since it is larger than the sum of its proper divisors (28201747).

89487853 is a wasteful number, since it uses less digits than its factorization.

89487853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its digits is 1935360, while the sum is 52.

The square root of 89487853 is about 9459.8019535295. The cubic root of 89487853 is about 447.2888060173.

The spelling of 89487853 in words is "eighty-nine million, four hundred eighty-seven thousand, eight hundred fifty-three".

Divisors: 1 7 13 19 73 91 133 247 511 709 949 1387 1729 4963 6643 9217 9709 13471 18031 51757 64519 94297 126217 175123 362299 672841 983383 1225861 4709887 6883681 12783979 89487853